[PATCH net-next] xfrm: add ARIA CBC and CTR support

[Hong In-su]

The kernel crypto API already provides ARIA implementations, but XFRM
does not have algorithm descriptors for them. Consequently, ARIA cannot
be selected for ESP through XFRM.

Add XFRM algorithm descriptors for CBC and RFC3686 CTR modes using the
existing cbc(aria) and rfc3686(ctr(aria)) crypto algorithms.

The CBC and CTR modes have been tested with IPsec using strongSwan.

Signed-off-by: Hong In-su <his1415@xxxxxxxxxx>
---
 net/xfrm/xfrm_algo.c | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/net/xfrm/xfrm_algo.c b/net/xfrm/xfrm_algo.c
index 70434495f23f..16c70dc1a426 100644
--- a/net/xfrm/xfrm_algo.c
+++ b/net/xfrm/xfrm_algo.c
@@ -512,6 +512,34 @@ static struct xfrm_algo_desc ealg_list[] = {
 		.sadb_alg_maxbits = 256
 	}
 },
+{
+	.name = "cbc(aria)",
+	.compat = "aria",
+
+	.uinfo = {
+		.encr = {
+			.geniv = "echainiv",
+			.blockbits = 128,
+			.defkeybits = 256,
+		}
+	},
+
+	.pfkey_supported = 0,
+},
+{
+	.name = "rfc3686(ctr(aria))",
+	.compat = "aria",
+
+	.uinfo = {
+		.encr = {
+			.geniv = "seqiv",
+			.blockbits = 128,
+			.defkeybits = 160,
+		}
+	},
+
+	.pfkey_supported = 0,
+},
 {
 	.name = "cbc(twofish)",
 	.compat = "twofish",
-- 
2.43.0